internal use内用(药)internaladj.国内的；内部的；身内的internal environmental variation内部环境变异internal customers' satisfactionInternal authentication error.内部鉴定错误。internal combustion engine cycle内燃机循环internal surface of cranial base颅底内面internal and external snap gauge内外(测)径规Internal carotid artery stenosis颈内动脉狭窄Internal Communications Exchange内部通信交换internalc conversion coefficient内转换系数internal friction twist principle内摩擦加捻原理